Need help with math!

[geek4life]

TEXT

Can someone please explain (and/or write it down) that in a different (simpler?) style the solution in red rectangle?

 

[jman19]

When dividing, you can shift the decimal places of both numbers the same way and still arrive at the same value.

 

[dighn]

the long division you mean? i don't think that can get any simpler without resorting to calculators. so you'll just have to read up on it

anyway it's conventional to make the divisor whole by moving the decimal to the right and moving the decimal of the number being divided by the same number of places (adding 0 if necessary)

 

[pinoy]

Originally posted by: jman19
When dividing, you can shift the decimal places of both numbers the same way and still arrive at the same value.

like what jman said:

your 5000 becomes 5,000,000 because your .125 becomes 125. Its a lot easier to divide whole nos.

 

[Howard]

5000
------
0.125

Multiply the numerator and denominator by 100 (multiplying top and bottom by the same coefficient results in the same number) so that the denominator becomes whole.

 

[TheChort]

5000/.125 = 5000*8 = 5,000,000/125 = 1,000,000/25 = 200,000/5 = 40,000

is that about it?

 

[cavemanmoron]

:beer:

 

[notfred]

People who can't understand 4th grade math do not deserve the name "geek4life".

 

[MAME]

Originally posted by: Howard
5000
------
0.125

Multiply the numerator and denominator by 100 (multiplying top and bottom by the same coefficient results in the same number) so that the denominator becomes whole.

you mean 1000

 

[MAME]

Originally posted by: notfred
People who can't understand 4th grade math do not deserve the name "geek4life".

and I was about to say that

 

[mwtgg]

What grade math is this?

 

[BigJ]

Originally posted by: mwtgg
What grade math is this?

Can't be past 6th grade math.

 

[slightlyhuman]

Originally posted by: notfred
People who can't understand 4th grade math do not deserve the name "geek4life".

who cares, where did he say in his post that he was a math teacher?

get off your high horse.

 

[LtPage1]

hey, you know whats cool? i just finished the last math class of my life.

 

[Howard]

Originally posted by: MAME

Originally posted by: Howard
5000
------
0.125

Multiply the numerator and denominator by 100 (multiplying top and bottom by the same coefficient results in the same number) so that the denominator becomes whole.

you mean 1000

Correct. Completely slipped my mind.

 

[Tiamat]

5000/.125 =

Notice that .125 is the same as 1/8

5000/(1/8) = 5000*8 = 40000.

Doesnt get simpler than that

 

[Howard]

Originally posted by: Tiamat
5000/.125 =

Notice that .125 is the same as 1/8

5000/(1/8) = 5000*8 = 40000.

Doesnt get simpler than that

Divide it by .126

 

[RedCOMET]

I think this can be done with phasors and cramers rule, whos with me?